Geometry-induced Interface Pinning at Completely Wet Walls.
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985858%3A_____%2F19%3A00505858" target="_blank" >RIV/67985858:_____/19:00505858 - isvavai.cz</a>
Alternative codes found
RIV/60461373:22340/19:43919097
Result on the web
<a href="https://arxiv.org/pdf/1904.13114.pdf" target="_blank" >https://arxiv.org/pdf/1904.13114.pdf</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevE.99.040801" target="_blank" >10.1103/PhysRevE.99.040801</a>
Alternative languages
Result language
angličtina
Original language name
Geometry-induced Interface Pinning at Completely Wet Walls.
Original language description
We study complete wetting of solid walls that are patterned by parallel nanogrooves of depth D and width L with a periodicity of 2L. The wall is formed of a material which interacts with the fluid via a long-range potential and exhibits first-order wetting transition at temperature T-w, should the wall be planar. Using a nonlocal density functional theory we show that at a fixed temperature T > T-w the process of complete wetting depends sensitively on two microscopic length scales L-c(+) and L-c(-). If the corrugation parameter L is greater than L-c(+), the process is continuous similar to complete wetting on a planar wall. For L-c(-) < L < L-c(+), the complete wetting exhibits first-order depinning transition corresponding to an abrupt unbinding of the liquid-gas interface from the wall. Finally, for L < L-c(-) the interface remains pinned at the wall even at bulk liquid-gas coexistence. This implies that nanomodification of substrate surfaces can always change their wetting character from hydrophilic into hydrophobic, in direct contrast to the macroscopic Wenzel law. The resulting surface phase diagram reveals a close analogy between the depinning and prewetting transitions including the nature of their critical points.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10403 - Physical chemistry
Result continuities
Project
<a href="/en/project/GA17-25100S" target="_blank" >GA17-25100S: Geometrically and Chemically Modified Surfaces: From Statics to Dynamics</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Physical Review E
ISSN
2470-0045
e-ISSN
—
Volume of the periodical
99
Issue of the periodical within the volume
4
Country of publishing house
US - UNITED STATES
Number of pages
6
Pages from-to
040801
UT code for WoS article
000466433200001
EID of the result in the Scopus database
2-s2.0-85065311826